Originally Posted by I'm Venom
If they aren't saving Thanos for the third film, I think that they'd keep things simple.
Yes, I think the battle against Thanos will be handled in A2 and it will be on a smaller scale than everyone is thinking. The Infinity Gauntlet will still be involved but Thanos will not kill half the universe and the battle will not involve dozens of heroes. It will be the current Avengers + Falcon + the Guardians and maybe Nova/Warlock. That's enough characters for a satisfying adaptation of the fight against Thanos while keeping it suitable for the big screen.
EDIT: Actually, now that I think about it, a pure Soul Gem arc might be what they'll use rather than the Infinity Gauntlet.